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Load balancing for single-address tenants

  • US 9,092,271 B2
  • Filed: 08/05/2014
  • Issued: 07/28/2015
  • Est. Priority Date: 07/12/2012
  • Status: Active Grant
First Claim
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1. A computer system configured as a load balancer that controls the routing of network packets between virtual addresses and destination addresses, the computer system comprising:

  • one or more processors; and

    one or more computer storage device having stored computer-executable instructions which, when executed by the one or more processors, implement a method for managing flow state of a virtual address, the method comprising;

    an act of the load balancer detecting that a virtual address that is being managed by the load balancer is to be scaled up from being associated with only a first destination address to being associated with at least an additional second destination address;

    in response to detecting, an act of the load balancer sending a configuration message to a router, the configuration message interpretable by the router as an instruction to send network packets that are addressed to the virtual address to the load balancer, and cease a previous practice to bypass the load balancer for network packets that are addressed to the virtual address; and

    subsequent to sending the configuration message to the router, an act of the load balancer storing flow state for the virtual address.

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